Hi Anne,
I agree with you concerning the use of humor in the classroom. People like to laugh and though laughter there is a release that occurs in the brain. A laugh in effect is a mini-break in the learning process, yet the laugh can be targeted to the subject being discussed. You mentioned sanitation as being a boring topic that can generate laughs. I would imagine that you have many many examples of sanitation issues that can generate a laugh, make a point and allow the students to make progress in their learning. Keep up the good work.
Gary
